12681956 has 24 divisors (see below), whose sum is σ = 25984896. Its totient is φ = 5302080.

The previous prime is 12681937. The next prime is 12681959. The reversal of 12681956 is 65918621.

It is not an unprimeable number, because it can be changed into a prime (12681959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4376 + ... + 6671.

It is an arithmetic number, because the mean of its divisors is an integer number (1082704).

Almost surely, 2^12681956 is an apocalyptic number.

It is an amenable number.

12681956 is an abundant number, since it is smaller than the sum of its proper divisors (13302940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12681956 is a wasteful number, since it uses less digits than its factorization.

12681956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11099 (or 11097 counting only the distinct ones).

The product of its digits is 25920, while the sum is 38.

The square root of 12681956 is about 3561.1734021246. The cubic root of 12681956 is about 233.2001080744.

The spelling of 12681956 in words is "twelve million, six hundred eighty-one thousand, nine hundred fifty-six".